Re: [CAD_CAM_EDM_DRO] re:CNC Lathe Threading

Wally,

You're overlooking the fact you have no way to disengage the
leadscrew from the nut when you reach the end of the thread.
You would have to stop and reverese the spindle to move the
carriage back out for another cut.

A pair of "half ball-nuts" would certainly be "interesting"
devices.

Bob

>Wally,
>
>You will not LOSE the ABILITY to thread, BUT your thread 'charts'
>WILL be ALL messed up, UNLESS you use a ballscrew the with the same
>threads per inch/mm!
>
>So, two approaches: One, re-figure the "available threads/feeds" with
>the new l/s; two, insert a gear which 'makes up the difference' at
>the end of the new screw.
>
>Hope this helps.
>
>Ballendo
>
>
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
>Post message: CAD_CAM_EDM_DRO@egroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
>List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
>Moderator: jmelson@... [Moderator]
>URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
>FAQ: http://www.ktmarketing.com/faq.html
>bill,
>List Manager
>
>
>